Removal Procedure
- Block the wheels.
- Drain the air reservoirs. Refer to
Draining Reservoirs
.
- Remove the air lines from the valve. Refer to the following procedures:
Tag or label the air lines for later installation.
| • | Hose and Line Replacement - Nylon Push-In Type Fitting |
| • | Hose and Line Replacement - Flexible |
| • | Hose and Line Replacement - Trailer and Emergency |
- Remove the nuts, the washers, and the bolts.
- Remove the park control valve (chassis mounted) from the crossmember.
- Inspect the air lines for the following:
- Replace or repair the air lines as necessary.
Installation Procedure
- Install the park control valve (chassis mounted) to the crossmember.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the bolts,
the washers, and the nuts.
Tighten
Tighten the park control valve (chassis mounted) nuts to 22 N·m
(16 lb ft).
- Install the air lines to the park control valve (chassis mounted).
- Perform the air leakage test. Refer to Chassis Mounted Park Control Valve Leakage Test
.
- Perform the operational test. Refer to
Chassis Mounted Park Control Valve Operational Check
.
- Remove the wheel blocks.
